Applied optics最新文献_第8页

Digitizing translucent object appearance by validating computed optical properties. 通过验证计算出的光学特性来数字化半透明物体的外观。

Applied optics Pub Date : 2024-06-01 DOI: 10.1364/AO.521974

Duc Minh Tran, Mark Bo Jensen, Pablo Santafé-Gabarda, Stefan Källberg, Alejandro Ferrero, Morten Rieger Hannemose, Jeppe Revall Frisvad

{"title":"Digitizing translucent object appearance by validating computed optical properties.","authors":"Duc Minh Tran, Mark Bo Jensen, Pablo Santafé-Gabarda, Stefan Källberg, Alejandro Ferrero, Morten Rieger Hannemose, Jeppe Revall Frisvad","doi":"10.1364/AO.521974","DOIUrl":"https://doi.org/10.1364/AO.521974","url":null,"abstract":"The optical properties available for an object are most often fragmented and insufficient for photorealistic rendering of the object. We propose a procedure for digitizing a translucent object with sufficient information for predictive rendering of its appearance. Based on object material descriptions, we compute optical properties and validate or adjust this object appearance model based on comparison of simulation with spectrophotometric measurements of the bidirectional scattering-surface reflectance distribution function (BSSRDF). To ease this type of comparison, we provide an efficient simulation tool that computes the BSSRDF for a particular light-view configuration. Even with just a few configurations, the localized lighting in BSSRDF measurements is useful for assessing the appropriateness of computed or otherwise acquired optical properties. To validate an object appearance model in a more common lighting environment, we render the appearance of the obtained digital twin and assess the photorealism of our renderings through pixel-by-pixel comparison with photographs of the physical object.","PeriodicalId":101299,"journal":{"name":"Applied optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141297771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Propagation through and characterization of atmospheric and oceanic phenomena: introduction to the joint feature issue in Applied Optics and Journal of the Optical Society of America A. 大气和海洋现象的传播和特征描述：《应用光学》和《美国光学学会学报》A 辑联合特刊导言。

Applied optics Pub Date : 2024-06-01 DOI: 10.1364/AO.530877

Svetlana Avramov-Zamurovic, Jeremy Bos, Melissa Beason, Yalcin Ata, Andreas Muschinski, Dario Perez

引用次数: 0

Renormalizing the high-harmonic interference via double-slit and grating. 通过双缝和光栅重新规范高次谐波干涉

Applied optics Pub Date : 2024-06-01 DOI: 10.1364/AO.523629

Yukiaki Ishida, Makoto Kuwata-Gonokami

引用次数: 0

Hybrid mode for absorption enhancement in the Ga₂O₃ nanocavity photodetector with grating electrodes. 带光栅电极的 Ga2O3 纳米空腔光电探测器中的混合吸收增强模式。

Applied optics Pub Date : 2024-06-01 DOI: 10.1364/AO.524563

Jiayong Yang, Cizhe Fang, Tongzhou Li, Yibo Wang, Xiaoxi Li, Xiangyu Zeng, Yan Liu, Yue Hao, Genquan Han

{"title":"Hybrid mode for absorption enhancement in the Ga2O3 nanocavity photodetector with grating electrodes.","authors":"Jiayong Yang, Cizhe Fang, Tongzhou Li, Yibo Wang, Xiaoxi Li, Xiangyu Zeng, Yan Liu, Yue Hao, Genquan Han","doi":"10.1364/AO.524563","DOIUrl":"https://doi.org/10.1364/AO.524563","url":null,"abstract":"Gallium oxide (G a 2 O 3) photodetectors have drawn increased interest for their widespread applications ranging from military to civil. Due to the inherent oxygen vacancy defects, they seriously suffer from trade-offs that make them incompetent for high-responsivity, quick-response detection. Herein, a G a 2 O 3 nanocavity photodetector assisted with grating electrodes is designed to break the constraint. The proposed structure supports both the plasmonic mode and the Fabry-Perot (F-P) mode. Numerical calculations show that the absorption of 99.8% is realized for ultra-thin G a 2 O 3 (30 nm), corresponding to a responsivity of 12.35 A/W. Benefiting from optical mechanisms, the external quantum efficiency (EQE) reaches 6040%, which is 466 times higher than that of bare G a 2 O 3 film. Furthermore, the proposed photodetector achieves a polarization-dependent dichroism ratio of 9.1, enabling polarization photodetection. The grating electrodes also effectively reduce the transit time of the photo-generated carriers. Our work provides a sophisticated platform for developing high-performance G a 2 O 3 photodetectors with the advantages of simplified fabrication processes and multidimensional detection.","PeriodicalId":101299,"journal":{"name":"Applied optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141297774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimized optical system with a 1.65 m wide-field corrector for the 6.5 m high-performance MUltiplexed Survey Telescope. 优化光学系统，为 6.5 米高性能 MUltiplexed 巡天望远镜配备 1.65 米宽视场校正器。

Applied optics Pub Date : 2024-06-01 DOI: 10.1364/AO.521907

Yifan Zhang, Qi Bian, Liquan Guo, Stephen Shectman, Zhongtian Tian, Jinlong Huang, Chen Xu, Zheng Cai, Song Huang, Lu Lu, Yamin Zheng, Shude Mao, Lei Huang

{"title":"Optimized optical system with a 1.65 m wide-field corrector for the 6.5 m high-performance MUltiplexed Survey Telescope.","authors":"Yifan Zhang, Qi Bian, Liquan Guo, Stephen Shectman, Zhongtian Tian, Jinlong Huang, Chen Xu, Zheng Cai, Song Huang, Lu Lu, Yamin Zheng, Shude Mao, Lei Huang","doi":"10.1364/AO.521907","DOIUrl":"https://doi.org/10.1364/AO.521907","url":null,"abstract":"The development of modern large-scale spectroscopic survey telescopes responds to the urgent demand for spectral information in astronomical research. Tsinghua University has previously proposed a 6.5 m MUltiplexed Survey Telescope consisting of a Ritchey-Chretien configuration and a 1.8 m multi-element wide-field corrector, achieving excellent performance and world-leading survey efficiency. However, an optimized 1.65 m multi-element corrector with five lenses is proposed to overcome the constraints on glass uniformity and verification in fabrication of the previous corrector design. It maintains outstanding image quality, with the 80% enclosed energy diameter not more than 0.559 arcsec within 3° FoV over up to a 55° zenith angle. The optimized optical system does not revise the working mode of the ADC or the curvature of the primary mirror while ensuring the reasonability and accuracy of manufacturing of large corrector elements. It provides a more feasible reference optical design for the MUltiplexed Survey Telescope in subsequent iterations and communications with manufacturers.","PeriodicalId":101299,"journal":{"name":"Applied optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141297775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Speckle visual cryptography for credential authentication. 用于凭证认证的斑点视觉加密技术

Applied optics Pub Date : 2024-06-01 DOI: 10.1364/AO.522918

Anqing Jiao, Yupeng Zhu, Zhaoke Mi, Xinlong Zhou, Qiaofen Zhu, Changjun Ke, Yishi Shi

{"title":"Speckle visual cryptography for credential authentication.","authors":"Anqing Jiao, Yupeng Zhu, Zhaoke Mi, Xinlong Zhou, Qiaofen Zhu, Changjun Ke, Yishi Shi","doi":"10.1364/AO.522918","DOIUrl":"https://doi.org/10.1364/AO.522918","url":null,"abstract":"Based on the high random distribution characteristic of the natural speckle image, a new method of speckle visual cryptography, to the best of our knowledge, is designed by combining the natural speckle image with the secret key in visual cryptography. Specifically, we designed an authentication system for user credentials by combining speckle visual cryptography and the QR code. By using the speckle visual cryptography method, the image of the QR code carrying user authentication information is hidden in the speckle image, and the speckle image is printed on the paper credentials. Through a simulation and analog experiments, we verify the possibility of applying speckle visual cryptography to a user credentials authentication system, compare the improved grayscale reordering algorithm and grayscale reordering algorithm, and prove that the improved grayscale reordering algorithm has more advantages in this system by comparing the PSNR and SSIM. Finally, the y-interference ability and the uniqueness of the virtual secret key in the system are analyzed to prove that the secret key has high anti-interference ability and security.","PeriodicalId":101299,"journal":{"name":"Applied optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141297778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High beam quality continuous-wave 320 nm UV laser from a walk-off compensated intracavity frequency-doubled Pr:YLF laser. 由腔内倍频 Pr:YLF 激光器产生的高光束质量 320 nm 连续波紫外激光器。

Applied optics Pub Date : 2024-06-01 DOI: 10.1364/AO.522760

Yue Zuo, Bo Wu, Yonghang Shen

引用次数: 0

High-speed eye tracking based on a synchronized imaging mechanism by a dual-ring infrared lighting source. 基于双环红外光源同步成像机制的高速眼球跟踪。

Applied optics Pub Date : 2024-06-01 DOI: 10.1364/AO.521840

Xiao Zhang, Lihui Wang, Yuan He, Zhiwei Mou, Yiqi Cao

引用次数: 0

Measurements of seeing-induced crosstalk in tip-tilt corrected solar polarimetry. 测量尖端倾斜校正太阳偏振测量法中的视线诱发串扰。

Applied optics Pub Date : 2024-05-20 DOI: 10.1364/AO.519245

Harsh Mathur, K Nagaraju, Hemanth Pruthvi, K Sagaynathan